KDP categories · Top KDP authors
Encryption (Security & Encryption, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Encryption (Security & Encryption, Kindle eBooks), updated Nov 3, 2026: median price $9.99, median 5 reviews, average rating 4.5 and a KDPTop opportunity score of 29/100 (highly competitive).
| Price range (middle 50%) | $4.99 – $26 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 24% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 10% of the parent category Security & Encryption (50), one of the easier corners under it.
- 24% of its best sellers came out in the last 90 days, more than in 91% of Kindle eBooks categories: readers here keep buying new titles.
- Its review barrier is lower than in 89% of Kindle eBooks categories: the median best seller has only 5 reviews, so new books can chart with few.
Top 10 Encryption best sellers
-
Household Cybersecurity: A CPA’s Guide to Protecting Your Accounts and Personal Information (Financial Topics in 100 Pages or Less)
by Mike Piper
- List rank#1
- Price$9.99
- Rating4.9
- Reviews32
-
Zero-Trust Cloud Security: Protecting Applications, Identities, Data, and Infrastructure in Multi-Cloud Environments
by MAHATMA REDDY MARRI
- List rank#2
- Price$1.99
- Rating5.0
- Reviews9
-
Step-by-Step Cyber Security for Beginners: A Practical Guide to Understanding Threats. Protecting Yourself and Your Devices in the Digital Age
by Ethan Ward
- List rank#3
- Price$0.99
- Rating4.7
- Reviews65
-
Internet Security: A Hands-on Approach (Computer & Internet Security)
by Wenliang Du
- List rank#4
- Price$29.99
- Rating4.3
- Reviews42
-
Quantum Computing 101: A Concise Guide to the Future of Computing, Security, and the Coming Q-Day
by Anna P. Murray
- List rank#5
- Price$3.99
- Rating4.6
- Reviews16
-
The Triangular Book of St. Germain (Translated): The Holy Magic Revealed to Moses
by Comte de Saint-Germain
- List rank#6
- Price$9.99
- Reviews-
-
Code 21: The Most Profound Secret Embedded in the Story of Humankind
by Abraham Weinryb
- List rank#7
- Price$9.99
- Reviews-
-
Codes, Ciphers, Steganography & Secret Messages
by Sunil Tanna
- List rank#8
- Price$2.99
- Rating4.3
- Reviews91
-
How to Register a TV to my Amazon Account: The Illustrated Step by Step Guide to Register a TV to my Amazon Prime Account in Less Than 60 Seconds (Quick Guide Book 2)
by Alec Young
- List rank#9
- Price$2.99
- Rating3.3
- Reviews72
-
Zero Trust Networks: Building Secure Systems in Untrusted Networks
by Razi Rais
- List rank#10
- Price$35.44
- Rating4.5
- Reviews17
Same niche in Books: Encryption
FAQ
Is Encryption a good niche for Amazon KDP?
Its KDPTop opportunity score is 29/100, which makes it highly competitive. The median best seller has 5 reviews and sells for $9.99.
How many reviews do you need to rank in Encryption?
The median best seller has 5 reviews, and 84% of them have fewer than 100.
What do Encryption best sellers cost?
The median price is $9.99; half of the best sellers are priced between $4.99 and $26.
Can new books break into Encryption?
24% of the current best sellers were released in the last 90 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.